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FLOORPLAN NOTES PAYABLE - Schedule of Floorplan Notes Payable (Details) - Line of credit - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Revolving credit facility - floorplan notes payable
Line of Credit Facility
Long-term debt, gross	$ 833.5	$ 511.7
Long-term debt, offset	(140.2)	(268.6)
Long-term debt	693.3	243.1
Other non-manufacturer facilities
Line of Credit Facility
Long-term debt	68.8	51.9
Floorplan notes payable - credit facility and other, net
Line of Credit Facility
Long-term debt	762.1	295.0
FMCC facility
Line of Credit Facility
Long-term debt, gross	55.1	22.8
Long-term debt, offset	(13.4)	(3.3)
Long-term debt	41.8	19.5
Other manufacturer affiliate facilities
Line of Credit Facility
Long-term debt	201.3	216.5
Floorplan notes payable - manufacturer affiliates, net
Line of Credit Facility
Long-term debt	$ 243.1	$ 236.0

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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